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PATENTED JAN. 5, 1904.

A. F. KINGSLBY. LOGOMOTIVE OR OTHER BOILER'FURNAGE.

APPLICATION FILED APR. 26. 1901.

3 SHEETS-SHEET 1.

NO MDDBL.

WITNESSES INVENTOH ALBERT F. KiNGSLEY.

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A. F. KINGSLBY. LOGOMOTIVE OR OTHER BOILER FURNACE.

APPLICATION FILED APR. 26. 1001. N0 MODEL. 3 SHEETSSHEET 2.

WITNESSES IN VENTOH v mofi cwm ALBERT F. KlNGSLEY.

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No.;'748,'748. PATBNTED JAN. 5, 1904.

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'LOGOMOTIVE OR OTHER BOILER FURNACE.

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Patented an'uary 5, 1904.

PATIENT OFFICE.

ALBERT FRANKLIN KIN GSLEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

LOCOMOTIVE OR OTHER BOILER FURNACE.

SPECIFICATION forming part of Letters Patent NO. 748,748, dated January 5, 1904:.

7 Application filed April 26, 1901. gerial No. 57,609. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT FRANKLIN KINGSLEY, a citizen of the United States, and a resident of the city of Washington, in the District of Columbia, have invented a certain new and useful Improvement in Locomotive or other Boiler Furnaces, of which the fol and in inclined position toward the opposite end of the fire-box.

The invention has been designed with more particular reference to the needs of locomotive-engine boiler-furnaces, and it is in that connection that I shall describe it.

I will first describe by reference to the accompanying drawings, forming part of this specification, the manner in which I carry the improvement into efiect and will then more particularly point out in the claims those features which I believe to be new and of my own invention.

In the drawings accompanying and forming part of this specification, Figure 1 is a longitudinal vertical section, partly in elevation, of so much of a locomotive as needed to illustrate my invention. Fig. 2 is a plan of the arch. Fig. 3 is a perspective view, and Fig.

4 is a plan, of one of the kinds of slabs used to make the archviz., the slabs F. Fi 5 is a perspective, and Fig. 6 a side elevation, of the slabs G used in the arch. Fig. 7 is a perspective view, and Fig. 8 is a section, of slabs H used in the arch. Fig. 9 represents, in end elevation and in side elevation, one of the spacing or brace blocks I. Fig. 10 is a perspective view of the wedge-shaped bricks J which support the slabs F. Fig. 11 is a front elevation of a locomotive-boiler,partly broken away to show the arrangement of the pipes through which air is supplied to the arch. Fig. 12 is an enlarged section of one of the injectorsused. Fig. 13 is a cross-section of a modified form of arch in which water-bars are dispensed with.

In this specification, the word front as applied to the arch or any portion thereof refers to the end nearest the fines or flue-sheet, and the wordrear refers to the end nearest the opposite or door end of the fire-box.

In the drawings, A is the fire-box of a locomotive boiler furnace. B represents the fines. l O is the grate-surface, and Dis the door, of any usual and suitable construction.

E represents the water-bars, communicating at their ends with the water-legs or waterspaces of the boiler and extending lengthwise of the fire-box from below the dues upward in an inclined direction to a point above the door D. In ordinary locomotives there are usually three of these bars arranged parallel with each other and at equal intervals apart, and they are ordinarily used to support the imperforate or solid fire-clay deflector, which it has been customary to interpose between the grate surface and the fines. These bars I make use of to support my improved arch or deflector. Said arch is a sectional one, composed of slabs of refractory material, preferably fire-clay. These slabs are of three kiuds-those F nearest the fluesheet, those H at the opposite or rear end of the arch, and those G which intervene between the slabs F H and constitute the body or main portion of the arch. The length of the arch depends upon the length of the furnace or fire-box and can be regulated by varying the number of rows of slabs G which form the main portion of the arch. Allof the slabs have approximately the same general dimensions and are, say, about four inches thick, except at the points where the air-conduits are formed in them, at which points they are about six inches thick. The meeting faces or edges of the slabs in adjoining rows are shouldered, so as to form a lap-joint, as indicated'at m in Fig. 6, and in each transverse row the interior opposite edges of the two slabs which constitute each row are similarly shouldered to form a lap-joint, as indicated at n, Fig. 5. The two slabs of each transverse row extend practically the width of the firebox, with their exterior opposite edges meeting the sides of the fire-box. The interior opposite shouldered and overlapping edges of thetwo slabs which meet over the center water-bar E have their vertical faces separated by a slightinterval to permit the lateral flue-sheet.

expansion of the slabs which takes place when the latter are exposed to the action of heat without opening or impairing the stability of the lap-joint between them.

The slabs G have air-conduits g, which are alike in all the slabs. Each slab has two of these conduits, which are imperforate and parallel with one another and extend through the slab in the direction of the length of the arch, and they are so arranged that when the slabs are set in place the conduits g in the slabs of one transverse row will register with and form a continuation of the conduits g of the corresponding slabs in the next adjoining row. The air-conduits in the slabs H, which constitute the rearmost row, are, however, differently arranged. Each is composed of two converging tubular legs h h, which meet in an opening h, that registers with the contiguous mou th of one of the conduits g in the next adjoining rows of slabs G, there being one of these V-shaped conduits h h and their common opening h for each conduitg. These V-shaped conduits stop short of the rear edges of the slabs H and are perforated on top with numerous small holes, as shown, through which the air will be discharged to meet the products of combustion as they pass over the rear end of the deflecting-arch. Similarly the slabs F at the opposite or front end of the arch are also provided with V- shaped conduits. There is, however, butone such conduit in each slab F. The ends of the two legs ff of each conduit meet in a common opening f on the edge of the slab F nearest the fiues, and they then diverge and open separately through the opposite edge of the slab F in a position to meet and register with the corresponding air-conduits g g in the contiguous slabs G.

It is desirable in order to prevent cinders from accumulating on the top of the arch and in time filling up against the flue-sheet andalso for other purposes to leave an interval-say from six to seven inches in wid thbetween the front end of the arch and the To this end I make use of fireclay tubular spacing-blocks 1, two in number, which are interposed between the fluesheet and arch, each so placed that the tubular conduit t', formed in it, will register at one end with the openingf in one of the slabs F and at the other end with one of the fines K, through which air is supplied to the arch. These spacing-blocks have a joint, in the nature of a lap-joint, with the slabs F'; but in order that the angle at whichthe one stands to the other may be varied to conform to the particular inclination of the water-bars in the furnace to which the arch may be applied I prefer to form this joint asaball-and-socket joint. To this end in the present instance the ball member of the joint is formed upon the block I, as indicated at 11, while the socket member of the joint is formed in'the slab F, as indicated at f The tubular blocks I keep the arch from slipping down toward the fluesheet and act as braces to sustain the weight of the arch as it presses in that direction, and they are therefore made of considerable solidityand strength, as shown. A short section 71 of iron pipe projects from the tubular conduit i of each block I into the boiler-flue, through which air is supplied to said conduit, which pipe serves to support and hold and assure the block in place, as well as to complete the air connection.

In ordinary locomotive-furnaces the waterbars F are usually secured at their front ends to the boiler at some distance below the bottom fines. In order, therefore, to make as direct and straight connection as possible between the arch and these bottom fines selected for supplying the air without making the slabs F which form the front row of the arch too bulky and cumbersome, I support these slabs upon wedge-shaped bricks J, interposed between them and the water-bars, which raise said slabs F to such a position that their openings F will be about on the same level with the air-fines, thus permitting a straight connect-ion between them through the medium of the tubular blocks I, as shown. These bricks are of such dimensions that two of them placed end to end will extend the width of the fire-box, and they have at their meeting edges a lap-joint 0, similar to the joints m 'n, already referred to. Both of these bricks can be made in one mold and can be interchangeably used. They fit at their tops into a recess on theunder side of the slabs F, as shown in Fig. 3. The wall f of this recess prevents the supporting-brick J from slipping down and holds it in place. The other and thicker wall f of the recess is provided to give more strength to the slab F at the point where the pressure of the portions of the arch above comes upon it.

The two boiler-fines through which air is supplied to the arch are shown at K. Air is supplied to these flues through one or more injectors L, arranged to take in air at the front of the engine, the steam-supply for said injectors being controlled by the engineer from the engine-cab in the usual way and through suitable connections. I prefer to use one injector for each flue. The pipeZ from each injector leads through the smokebox of the locomotive to its respective flue.

The arch thus made, while sectional, is continuous and practically solid upon its under side throughout its width and length. The air-vents or discharge-openings, while concentrated near the rear end of the arch, are located on top of the arch instead of in the side or onthe extreme end and in a position where they will not be choked or injuriously affected by the clinker which in process of time unavoidably forms upon the arch. Furthermore, by concentrating these openings in the row of slabs nearest the door of the firebox and farthest removed from the fluesheet the full head and volume of air is caused to meet the products of combustion at a point far enough removed from the fines to permit practically perfect combustion before the gases reach the flues. Then, again, by arranging the air-discharge openings in the manner in which these discharge-openings are, so that they will lie in practically a continuous zigzag line entirely across the firebox from one side to the other, I obtain a very much more efiectiveand thorough air distribution than otherwise would be practicable and discharge the air in such manner as to insure complete intermixture with the products of combustion. By the combination described the longevity of the arch is materially increased, while the construction itself is so simple that unskilled labor can be used to set up or repair the arch. Only three patterns of tubular slabs are required, or four, including the tubular spacing-bricks, and these can be renewed and replaced expeditiously and cheaply. The injecting apparatus will of course last indefinitely.

On some railroads the water used contains mineral substances, which causes such serious and rapid corrosion that water-bars cannot be used with safety. To provide against any such contingency, I may dispense with water-bars and support the arch, as shown in Fig. 13, from each side of the fire b'ox on lugs t, secured to and projecting from the interior walls of the fire-box. Slots sin the exterior opposite ends of the fire-clay slabs engage these lugs, which thus are covered and protected from the flame. By using in the center of this arch a key brick or block 1 of varied thickness the same slabs can be used in fire-boxes of various widths.

Having described my improvements and the best way known to me of carrying the same into effect, what Iclaim herein as new and of my own invent-ion, and desire to secure by Letters Patent, is as follows:

1. A smoke-consuming device for boilerfurnaces comprising a fire-clay arch interposed between the flue-sheet and the gratesurface of the firebox, said arch being solid and continuous on itsunder face throughout the width of the fire-box and provided with internal air-conduits which discharge through openings formed in the top face of the arch near the rear end. of the latter, and being separated from the fine-sheet by an open space bridged by tubular spacing blocks which open at one end into the conduits in the fire-clay arch, and at the other end into certain of the fines into and through which air is supplied by injectors, as hereinbefore shown and described.

2. In combination with the fire-box, the fines and the water-bars, the sectional fireclay arch composed of the slabs F, G, H, constructed, arranged and fitted together and formed with air-conduits and top dischargeopenings as described, the supporting-bricks J for the slabs F, the tubular spacing-blocks I, and the described means for supplying air under pressure thereto, as and for the purposes hereinbefore set forth.

In testimony whereof I have hereunto set my hand this 22d day of April, 1901.

ALBERT FRANKLIN KINGSLEY. Witnesses:

ARNOLD J. B. WEDEMEYER, FRANK V. EOHESSON. 

